Oil-burner.



PIA. COLEMAN.

OIL BURNER. APPLICATION FILED FEB. 124912. RENEWED JAN. 7, 1914.1,098,429., Patented June 2, 1914.

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PATENT oFFroE.

FREDERICK At. COLEMAN, 0E. CLEVELAND, OHIO.

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Specification of Letters Patent, I

application 'filled- February in, 1912,.Serlwt1ltd $27,234? RenewedJanuary 7, 1914*. Serial: No. 8129mm To all whom it may concern Be itknown that l, linuenmorc ll... Conn MAN, a citizen of the United States,residing at Cleveland, in the county of Guyahoga and State of Ohio, haveinvented a certain new and useful Improvement in Oil-Burners, of whichthe following is a full, clear, andexact description.

The principal object-of this invention is to provide a cheap and simpleoil burner, with which the oil will be completely consumed in theproduction of a hot flame whose size may be regulated as required. Theburner, however, may be used as a burner of gas if desired.

The invention consists in the construction and combination of partswhich are shown in the drawing, and hereinafter described and accuratelydefined in the appended supply claim.

In the drawing, Figurel'is a central 1011- gitudinal sectional view ofan oil burner embodying the invention. Fig. 2 is a longitudinalsectional view of the front part of said burnerdevice when both ofthevalves (to be described) are open, as they may be in use. Fig. 3 is atransverse sectional view in the plane of line 3-3 on Fig. 1.

Referring to the parts by letters, A represents a chamber which iscylindrical in form, and has an inlet a to which a supply pipe G may beconnected, and throughthis pipe air orsome oxygen supplying fluid willbe delivered into this chamber A. Centrally disposed within this chamberis a fuel nozzle 13 having a central discharge opening 6, and having afuel supply opening 6 to which a supply pipe H may be connected. Thisnozzle B is preferably an integral part of the same casting, which formsthe chamber A. The front end of the fuel nozzle prbjects slightly beyondthe front end of the chamber; and this projecting front end has aconical exterior b A cap valve C screws onto the front end of thechamber A, and has latcrallyprojecting arms-(.2 by which it may beturned in one direction or the other. This cap valve has a centrallydisposed hole I) which is tapered so as to nicely fit upon the taperedend W'of the fuel nozzle.

A cap I) is screwed onto the rear end of the chamber C. A valve E screwsthrough this cap and passes through a stuiiing box F in the rear end ofthe fuel nozzle. The front end of this valve E is conical and shaped tonicely fit a conical seat h in said? nozzle. This valve E has a hole 6which extends from its front end rearward past the stdfl mg box F, whichhole has a lateral extension e thrpugh the side of. the valve sosaudhole is always in communication with the interior of the chamber A.

Patented June 1M4 Preparatory to starting the burner, both f of thevalves 0 and E are closed. Then the" valve E is opened slight1y,-saidvalve hav ing at its rear end a hand wheel 6 by which 1t may be turnedto produce this result.

When saidvalve has been moved slightl from 1ts seat, and the fuel(preferably oil and the oxygen supplying fluid (preferably air) areturned on, .a stream of car will be discharged from, the front end ofthe valve into the openin I) of the nozzle. Also a very thin annularstream of fuel will be discharged into the same opening b around the airstream. This annular stream of fuel being directed at an angle into theair stream will become fairly well mixed with the'air within the openingZ =At any rate, as the air and fuel are-discharged from the end of thenozzle the liquid fuel will have been atomized and pretty thoroughlymixed with the air so that it may be readily ignited and will burnfreely.- The flame having been onceestablished, the operator by takinghold of thearms 0 will turn valve Grin the opening. direction, whereuponan annular stream of air will flow between this valve and the nozzle,which air stream will envelop the annular stream of fuel. But because ofthe inclination of the passage between them, this air will be directedin ward into the outflowing mixture of air and fuel which. liowsfrom thenozzle outlet' b so as to facilitate the mixture o'f-airvand fuel. Bystill further opening the valve G and by still further opening valveE,this flame may be enlarged to any size within the limits of thedevice.The proportions'of fuel and air may be accurately regulated. by themanipulation of the two valves, so that the oil will be completelyconsumed and a. hot flameproduced. V

It will be understood that the described burner may be used with agaseous fuel, although it was especially contrived with reference to itsefficiency as an oil burner.

Having described my invention, I claim:

In an oil burner, the combination of a chamber open at both ends andhaving an inlet at its side, a fuel nozzle disposed contrally Withinsaid chamber and having a fuel inlet through the side,the front end ofsaid nozzle being externally tapered and said nozzle having aninternally tapered valve seat,-a ca valve which screws onto the frontend of t e chamber and has a centrally tapered opening which is fittedto the tapered exterior surface of the front end of the fuel nozzle,said cap valve being provided with operating arms, a cap which screwsonto the rear end of the chamber, a

valve which screws through the last named

